Question

firewall rules to allow sudo apt-get update

My DO firewall (not UFW) is set up to allow only HTTPS and SSH.

sudo apt-get update

fails with

Err:1 http://mirrors.digitalocean.com/ubuntu focal InRelease Temporary failure resolving ‘mirrors.digitalocean.com’

but is ok when the firewall is disabled

What rules would I add to the firewall to allow ‘apt-get update’ ?

Submit an answer

This textbox defaults to using Markdown to format your answer.

You can type !ref in this text area to quickly search our full set of tutorials, documentation & marketplace offerings and insert the link!

Sign In or Sign Up to Answer

These answers are provided by our Community. If you find them useful, show some love by clicking the heart. If you run into issues leave a comment, or add your own answer to help others.

Want to learn more? Join the DigitalOcean Community!

Join our DigitalOcean community of over a million developers for free! Get help and share knowledge in Q&A, subscribe to topics of interest, and get courses and tools that will help you grow as a developer and scale your project or business.

Janusz Szeligowski • October 11, 2020

Hi, How do the outbound rules look like in your firewall’s settings ? Default settings are like below

Type 	    Protocol 	Port Range 	        Destinations 	
ICMP 	    ICMP                         All IPv4 All IPv6
All TCP     TCP          All ports       All IPv4 All IPv6
All UDP     UDP          All ports       All IPv4 All IPv6

All outgoing traffic is allowed by default, and it is OK for most implementations.

Try DigitalOcean for free

Click below to sign up and get $200 of credit to try our products over 60 days!

Sign up